docs: def close(self):
          """Closes associated resources of this request object.  This
          closes all file handles explicitly.  You can also use the request
          object in a with statement with will automatically close it.
  
          .. versionadded:: 0.9
          """
          files = self.__dict__.get('files')
          for key, value in iter_multi_items(files or ()):
              value.close()